Concrete Slabs in Mesquite, TX

A concrete slab is a flat pad poured for something to sit on: a storage shed, a workshop, a carport, a boat or RV, a hot tub, an A/C unit or a generator. Concrete slabs in Mesquite backyards have one job, which is to stay flat and level under a load for decades. On Blackland clay that takes more than leveling some dirt and pouring.

What goes under a slab

The Dallas County Master Gardeners describe the soil across Dallas and Fort Worth as expansive black clay that swells with water and shrinks and cracks when dry. Under a shed or a hot tub, that movement shows up as a door that sticks, a cover that will not close, or a pad that rocks. We strip the topsoil and roots, cut to firm ground, and build up a compacted crushed-stone base. HomeGuide notes that one cubic yard of concrete covers about 81 square feet of a 4-inch slab, so the base and thickness choices also drive how much concrete the job needs.

Sizing thickness and steel to the load

• Sheds and A/C pads: 4 inches with rebar is typical.
• Workshops and garages: 4 to 6 inches with rebar, often with thickened edges where walls will bear.
• RV, boat and trailer pads: HomeGuide's driveway guide suggests 5 to 6 inches where RVs park, plus a thickened apron where wheels roll on.
• Hot tubs: a filled tub is heavy, so we follow the maker's pad requirements and add steel.
• Buildings: anchor bolts or embeds can be set in the wet concrete so a shed or shop bolts straight down.

Vapor barrier and moisture

For a workshop or any slab that will be enclosed, we lay a plastic vapor barrier over the base. It keeps ground moisture from wicking up into tools and stored goods and helps flooring stay put later.

Get a Free Estimate

Square, level, ready to build on

A prefab shed or metal building kit needs a slab that is square and the right size to the inch. We check the kit's foundation drawing before forming, and we set the top of slab a few inches above grade so rain does not run in. Slabs that sit inside a fence line or near property lines may have city setback rules; the City of Mesquite publishes setback verification guidelines through its Building Inspection division, and we check what applies before we form.

Pouring in the heat

Summer pours start early. We wet the base, place and finish the slab while it is still workable, and keep it damp while it cures. A steel trowel finish suits a workshop floor. A broom finish suits carports, RV pads and outdoor pads that get wet.

Care

Keep downspouts and sprinklers from soaking the slab edges. Seal outdoor pads every few years. If a crack opens, seal it before water reaches the base.